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Descrizione
Right now you can apply certain post process effects to just one feature. The bloom shader doesn't do any check to allow you to apply it to just to the selected feature as you would expect.
This is potentially pretty easy, you just need to take the check from another post process like the black and white one: https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Source/Shaders/PostProcessStages/BlackAndWhite.glsl
and apply it in the bloom shader: https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Source/Shaders/PostProcessStages/BloomComposite.glsl
The forum thread here has an example you could use for testing. Note that you'd need to test the selected feature on a model, since entities aren't yet supported there (see https://github.com/AnalyticalGraphicsInc/cesium/issues/6705).